twitter_oauthtest.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <oauth.h>

/*
* a example requesting and parsing a request-token from an OAuth service-provider
* excercising the oauth-HTTP GET function. - it is almost the same as
* /ref request_token_example_post below.
*/
void request_token_example_get(void) {
#if 0
  const char *request_token_uri = "http://oauth-sandbox.mediamatic.nl/module/OAuth/request_token";
  const char *req_c_key         = "17b09ea4c9a4121145936f0d7d8daa28047583796"; //< consumer key
  const char *req_c_secret      = "942295b08ffce77b399419ee96ac65be"; //< consumer secret
#else
  const char *request_token_uri = "http://term.ie/oauth/example/request_token.php";
  const char *req_c_key         = "key"; //< consumer key
  const char *req_c_secret      = "secret"; //< consumer secret
#endif
  char *res_t_key    = NULL; //< replied key
  char *res_t_secret = NULL; //< replied secret

  char *req_url = NULL;
  char *reply;

  req_url = oauth_sign_url2(request_token_uri, NULL, OA_HMAC, NULL, req_c_key, req_c_secret, NULL, NULL);

  printf("request URL:%s/n/n", req_url);
  reply = oauth_http_get(req_url,NULL);
  if (!reply)
    printf("HTTP request for an oauth request-token failed./n");
  else {
    // parse reply - example:
    //"oauth_token=2a71d1c73d2771b00f13ca0acb9836a10477d3c56&oauth_token_secret=a1b5c00c1f3e23fb314a0aa22e990266"
    int rc;
    char **rv = NULL;

    printf("HTTP-reply: %s/n", reply);
    rc = oauth_split_url_parameters(reply, &rv);
    qsort(rv, rc, sizeof(char *), oauth_cmpstringp);
    if( rc==2
        && !strncmp(rv[0],"oauth_token=",11)
        && !strncmp(rv[1],"oauth_token_secret=",18) ){
          res_t_key=strdup(&(rv[0][12]));
          res_t_secret=strdup(&(rv[1][19]));
          printf("key:    '%s'/nsecret: '%s'/n",res_t_key, res_t_secret);
    }
    if(rv) free(rv);
  }

  if(req_url) free(req_url);
  if(reply) free(reply);
  if(res_t_key) free(res_t_key);
  if(res_t_secret) free(res_t_secret);
}

/*
* a example requesting and parsing a request-token from an OAuth service-provider
* using the oauth-HTTP POST function.
*/
void request_token_example_post(void) {
#if 0
  const char *request_token_uri = "http://oauth-sandbox.mediamatic.nl/module/OAuth/request_token";
  const char *req_c_key         = "17b09ea4c9a4121145936f0d7d8daa28047583796"; //< consumer key
  const char *req_c_secret      = "942295b08ffce77b399419ee96ac65be"; //< consumer secret
#else
  const char *request_token_uri = "http://term.ie/oauth/example/request_token.php";
  const char *req_c_key         = "key"; //< consumer key
  const char *req_c_secret      = "secret"; //< consumer secret
#endif
  char *res_t_key    = NULL; //< replied key
  char *res_t_secret = NULL; //< replied secret

  char *postarg = NULL;
  char *req_url;
  char *reply;

  req_url = oauth_sign_url2(request_token_uri, &postarg, OA_HMAC, NULL, req_c_key, req_c_secret, NULL, NULL);

  printf("request URL:%s/n/n", req_url);
  reply = oauth_http_post(req_url,postarg);
  if (!reply)
    printf("HTTP request for an oauth request-token failed./n");
  else {
    //parse reply - example:
    //"oauth_token=2a71d1c73d2771b00f13ca0acb9836a10477d3c56&oauth_token_secret=a1b5c00c1f3e23fb314a0aa22e990266"
    int rc;
    char **rv = NULL;
    printf("HTTP-reply: %s/n", reply);
    rc = oauth_split_url_parameters(reply, &rv);
    qsort(rv, rc, sizeof(char *), oauth_cmpstringp);
    if( rc==2
        && !strncmp(rv[0],"oauth_token=",11)
        && !strncmp(rv[1],"oauth_token_secret=",18) ){
          res_t_key=strdup(&(rv[0][12]));
          res_t_secret=strdup(&(rv[1][19]));
          printf("key:    '%s'/nsecret: '%s'/n",res_t_key, res_t_secret);
    }
    if(rv) free(rv);
  }

  if(req_url) free(req_url);
  if(postarg) free(postarg);
  if(reply) free(reply);
  if(res_t_key) free(res_t_key);
  if(res_t_secret) free(res_t_secret);
}


/*
* Main Test and Example Code.
*
* compile:
*  gcc -lssl -loauth -o oauthtest oauthtest.c
*/
int main (int argc, char **argv) {
  int fail=0;

  const char *url      = "http://base.url/&just=append?post=or_get_parameters"
                         "&arguments=will_be_formatted_automatically?&dont_care"
                         "=about_separators";
                         //< the url to sign
  const char *c_key    = "1234567890abcdef1234567890abcdef123456789";
                        //< consumer key
  const char *c_secret = "01230123012301230123012301230123";
                        //< consumer secret
  const char *t_key    = "0987654321fedcba0987654321fedcba098765432";
                        //< token key
  const char *t_secret = "66666666666666666666666666666666";
                        //< token secret

#if 1 // example sign GET request and print the signed request URL
  {
    char *geturl = NULL;
    geturl = oauth_sign_url2(url, NULL, OA_HMAC, NULL, c_key, c_secret, t_key, t_secret);
    printf("GET: URL:%s/n/n", geturl);
    if(geturl) free(geturl);
  }
#endif

#if 1 // sign POST ;) example
  {
    char *postargs = NULL, *post = NULL;
    post = oauth_sign_url2(url, &postargs, OA_HMAC, NULL, c_key, c_secret, t_key, t_secret);
    printf("POST: URL:%s/n      PARAM:%s/n/n", post, postargs);
    if(post) free(post);
    if(postargs) free(postargs);
  }
#endif

  printf(" *** sending HTTP request *** /n/n");

// These two will perform a HTTP request, requesting an access token.
// it's intended both as test (verify signature)
// and example code.
#if 1 // POST a request-token request
  request_token_example_post();
#endif
#if 1 // GET a request-token
  request_token_example_get();
#endif

  return (fail?1:0);
}